Home / 67,131.48-100,690.68-20,384.76

Finding the Fourth Proportional to 67,131.48, 100,690.68 and 20,384.76

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Solution

The fourth proportional to 67,131.48, 100,690.68 and 20,384.76 is: 30,575.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,131.48 : 100,690.68 = 20,384.76 : x
  2. Step 2: Convert to fraction form
    67,131.48/100,690.68 = 20,384.76/x
  3. Step 3: Cross multiply
    67,131.48x = 100,690.68 × 20,384.76
  4. Step 4: Simplify right side
    67,131.48x = 2,052,555,346.04
  5. Step 5: Solve for x
    x = 2,052,555,346.04/67,131.48
  6. Step 6: Final answer
    x = 30,575.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.